Portable information processing device

1. A portable information processing device comprising: a circuit board portion that has a main body portion side board mounting an electronic circuit thereon and forming a main body portion, and a connector portion side board forming a connector portion for connection to electronic equipment, wherein the main body portion side board of the circuit board portion mounts an electronic circuit on at least one of a first surface and a second surface opposite to the first surface, and is provided with a main body portion side electro-static discharge line which functions as an electro-static discharge surge arrester at an edge portion of a surface on which at least an electronic circuit is mounted, and wherein the connector portion side board of the circuit board portion is provided with a connector portion side electro-static discharge line which is connected to the main body portion side electro-static discharge line and functions as an electro-static emission portion, on at least one of the first surface and the second surface.

2. The portable information processing device according to claim 1 , further comprising an insulating support casing that supports the connector portion side board from one surface side, wherein the connector portion side electro-static discharge line is formed on the second surface, and wherein a discharge path is formed between at least a part of the connector portion side electro-static discharge line and an air layer which leads to outside via the insulating support casing.

3. The portable information processing device according to claim 2 , wherein the discharge path includes a hole which is formed in the connector portion side board in the vicinity of a tip portion of the connector portion side electro-static discharge line, and an air layer which communicates with the hole and leads to outside of the support casing.

4. The portable information processing device according to claim 2 , wherein the support casing is also disposed at a tip surface side of the connector portion side board, and wherein the discharge path includes a notch which is formed at a tip portion of the connector portion side board in the vicinity of the connector portion side electro-static discharge line, and an air layer which communicates with the notch and leads to outside of the support casing.

5. The portable information processing device according to claim 2 , wherein a connection portion of electronic equipment which is a connection target device has a housing which guides insertion or removal of an opening portion of the connector portion, and wherein an end portion of the support casing comes into contact with a lateral surface which is present in the insertion direction inside the housing, and the discharge path leads to the lateral surface.

6. The portable information processing device according to claim 2 , wherein the discharge path includes a hole which is formed in the support casing from a part of the connector portion side electro-static discharge line which leads to outside.

7. The portable information processing device according to claim 2 , wherein a connection portion of electronic equipment which is a connection target device has a housing which guides insertion or removal of an opening portion of the connector portion, wherein the housing includes a conductive locking portion which locks at least a part of the support casing therein in the insertion direction of the connector portion, and wherein the discharge path includes a hole which is formed in the support casing from the connector portion side electro-static discharge line located at a position corresponding to the locking portion which leads to the locking portion when the connector portion is connected to the connection portion of electronic equipment.

8. The portable information processing device according to claim 2 , wherein the main body portion side board of the circuit board portion mounts electronic circuits on the first surface and the second surface, wherein a first connector portion side electro-static discharge line which functions as an electro-static discharge emission portion is formed at an edge portion of the first surface, wherein a second connector portion side electro-static discharge line which is connected to the first electro-static discharge line in a circuital way and functions as an electro-static discharge emission portion is formed at an edge portion of the second surface, and wherein the connector portion side board of the circuit board portion is provided with a connector portion side electro-static discharge line which is connected to the main body portion side electro-static discharge line and functions as an electro-static discharge emission portion, on the second surface of at least one of two edges located at sides perpendicular to a direction where the connector portion is inserted into or removed from the electronic equipment.

9. The portable information processing device according to claim 1 , wherein the connector portion side board of the circuit board portion is provided with connection terminals including a ground terminal on the first surface, wherein the main body portion side board of the circuit board portion is connected to the main body portion side electro-static discharge line on the first surface, and wherein the ground terminal is connected to the main body portion side electro-static discharge line as the connector portion side electro-static discharge line.

10. The portable information processing device according to claim 9 , wherein the connection terminals include a shield ground terminal and a signal ground terminal, and wherein the shield ground terminal is connected to the main body portion side electro-static discharge line as the connector portion side electro-static discharge line.